PSTY_RANGE is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "Range for Item Category in Purchasing Document (PSTYP)" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately. i.e. DATA: wa_PSTY_RANGE TYPE PSTY_RANGE.
The PSTY_RANGE table consists of various fields, each holding specific information or linking keys about Range for Item Category in Purchasing Document (PSTYP) data available in SAP. These include OPTION (Selection operator OPTION (as per range table)), PSTYP_LOW (Item Category in Purchasing Document), PSTYP_HIGH (Item Category in Purchasing Document)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .